I'm trying to create a build environment for Lucid, and calling cowbuilder --create --distribution lucid fails with the messages below:

Get:1 http://us-east-1.ec2.archive.ubuntu.com lucid Release.gpg [189B]

Hit http://us-east-1.ec2.archive.ubuntu.com lucid Release

Hit http://us-east-1.ec2.archive.ubuntu.com lucid/main Packages

Fetched 189B in 0s (2376B/s)

Reading package lists...

I: Obtaining the cached apt archive contents

Reading package lists...

Building dependency tree...

0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.

Reading package lists...

Building dependency tree...

apt is already the newest version.

Package cowdancer is not available, but is referred to by another package.

This may mean that the package is missing, has been obsoleted, or

is only available from another source

E: Package cowdancer has no installation candidate

I: unmounting dev/pts filesystem

I: unmounting proc filesystem

pbuilder create failed

  forking: rm -rf /opt/cowbuilder